1. A prominent disturbance in sleep that is sufficiently severe to warrant independent clinical attention.
2. There is evidence from the history, physical examination, or laboratory findings that the sleep disturbance is the direct physiological consequence of a general medical condition.
3. The disturbance is not better accounted for by another mental disorder (e.g., an adjustment disorder in which the stressor is a serious medical illness).
4. The disturbance does not occur exclusively during the course of a delirium.
5. The disturbance does not meet the criteria for breathing-related sleep disorder or narcolepsy.
6. The sleep disturbance causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.

Specify type:
Insomnia type: if the predominant sleep disturbance is insomnia
Hypersomnia type: if the predominant sleep disturbance is hypersomnia
Parasomnia type: if the predominant sleep disturbance is a parasomnia
Mixed type: if more than one sleep disturbance is present and none predominates
Coding note: Include the name of the general medical condition on Axis I, e.g., sleep disorder due to chronic obstructive pulmonary disease, insomnia type; also code the general medical condition on Axis III.